Elevated vascular endothelial factor (VEF) is divided into pathological and physiological. Pathological elevation is common in tumor cell proliferation, ischemia, inflammation, etc. Physiological elevation is common in women during pregnancy and children during growth and development. VEGF is a highly biologically active functional glycoprotein that acts on vascular endothelial cells, causing them to proliferate, migrate, form official lumens, participate in angiogenesis and increase capillary permeability. Vascular endothelial factor, therefore, has an important role in wound healing, tissue and organ repair, and embryonic development. Tumor neoangiogenesis is carried out and completed under the regulation of vascular endothelial growth factor, therefore, vascular endothelial factor can reflect the occurrence, development and reversion of tumor. By measuring vascular endothelial growth factor in serum, early screening of tumors, observation of the efficacy of tumor patient treatment and recurrence monitoring can be achieved. If you have elevated VEGF, you need to go to the hospital for medical consultation, so that the doctor can find the cause of the disease and actively cooperate with the doctor for treatment.